The capacity of a backpacking backpack is typically measured in liters. The appropriate size of a backpack will depend on the length of your trip and the amount of gear you need to carry. Usually we try and keep it light and 50-60 litres is plenty for most trips. If you want to dive into what size works for longer trips...
Here's a rough guideline:
- Overnight trips (1-2 nights): 30-50 liters
- Weekend trips (2-3 nights): 50-70 liters
- Multi-day trips (3-5 nights): 60-80 liters
- Extended trips (5+ nights): 70 liters or more
It's important to note that these are general guidelines and that individual needs may vary based on personal gear, food, and clothing requirements, as well as environmental factors like temperature and precipitation. It's also a good idea to pack and adjust your gear before heading out on your trip to ensure that the backpack fits properly and is comfortable to wear. That usually means the bulk of the weight close to your lower back or lumbar. Keep items on the outside for easy access, and keep your backpack dry at all costs.
